Hi I uploaded 3 HTML templates but all got rejected for unknown reasons

I received an email with the following content:

Thank you for your submission. We have completed our review of “VGA Building HTML Template” and unfortunately we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again.

Link template here: VGA Building

Can someone help me know the reason for the rejection?
What are the quality standards to meet themeforest standards when designing?

Please help, Thanks!

Please help me!